/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Microsoft YaHei", sans-serif;
    background: #f5f5f5;
    color: #333;
}

.container {
    display: grid;
    grid-template-areas:
        "header header"
        "nav main";
    grid-template-rows: 200px 1fr;
    grid-template-columns: 250px 1fr;
    height: 100vh;
    gap: 10px;
    padding: 10px;
    background-image: url('https://www.transparenttextures.com/patterns/white-paperboard.png');
    background-repeat: repeat;
    background-size: 200px;
}

header {
    grid-area: header;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    height: 120px;
    margin-bottom: 15px;
}

header iframe {
    width: 100%;
    height: 100%;
}

nav {
    grid-area: nav;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

main {
    grid-area: main;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

iframe {
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 8px;
} 